Gas heater valve



Aug. c. A. PEARSON GAS HEATER ALVE Filed Nov'. 26, 1954 2 Sheets-Sheet 1v INVENTOR. 64/?L PEI/Riv A BY l I? ATTORNEY.

Patented Aug. 20, 1935 i I GAS HEATER VALVE "Carl A. Pearson.Driv'erfColo.

v ApplicaticnNovember 26,1934, Serial-No. 754.735

. "6 claims. (01. zf'ivcs) This invention relates to a supply valveforgas TIie'inventiGncomprises: a valve bodvlfl earheaters The principalobject of the invention rymgamsmtaivebiug|| and ascon da ry valve is toprovide a composite'valve for controlling the 'p1ugfl-"2. The valveplugsI I and I2 are' preiergassupply. to an automatic lighter, a pilot light,ably'of the"plug tvpefittedinto taperedb'ores. 5 and a; Inai'n'burner-sothat a pre-determined se- The valve plugs ar maintained snug in their""5 queries of operations must be carried out in open- 'bo'res bymeans'of compression springs 1 3 ing or closing the variousvalves- I arecompressed between compression "nuts Another objectof the invention-isto so coninthe 'valves'andspring washers I-Sagai'nstthe struct thedevice that the supply to the .pilot may, I v r g p lightcannot-be-turnedon without also turning on The main valvejplug fl 'isprovided 'with a T0 the lighter supply,a'nd so thatthe mainburner'main'handle l6. Th'esecondar'y valveplug lfis 'valve'can'not beturnedon until the pilot supply provided with a secondary handle ll.Each *of has been "turnedon and the-lighter supply has these handles'isca'st integrally with an interbeen turned-off. e lockin'gdi'sc, therebeing"an'interlocking'disc l3 Explosions are often caused in gas'heatingdeon thehandle Hi andinterlocking 'disc 19 on the t5 Vices by turningthe main 'supplyon while the handle 11. A a o lighter and pilot are off,thereby filling the fire- Abortion of the "disc 119 "is a'rcii'ateaboutthe boxwithcombustiblegas which is ignited when gixis of the plugvalvefli, indicated at 20. a light is "later introduced. Explosionsarealso This arcuateportionfits into ana'rcuate indenta- -20 occasioned byaccidental shutting on of the main tien 2! in the disc l8. A portion of*th'edisc-IB 121) supply when the 'pilot isnot burning, and then is alsoa'rciiatefa's-isliown at "2'2 andthe latter 'againturning on themain-supplywithout apilot arcuate portion fitsinto acorrespondingarcuate 'light.' I Y r indntation ain the disc. 'rnearcuate portion A further object of this invention is toprdvidef'gfi'termina'tesfat one'e'xtr'emity in'a'stop b053 4.

UNIT-ED stares PATENT "OFFICE aivalve' in which it willbe impossible totu'rn'the Theportionizpf the disc l8 terminates ina sirn 65 'main valveon until the pilot=is'turned'dn'and ilarj-stop boss 25. 'Iheindentations '2 and 23 in which the pilot'light cannot'b'eturned'off-u'ntil are for'me'dwith elongated extremities 26 and 21 themain supply has beenturnedofi. respectively, which "also act as stops tolimit the Otlierob'jects an'dadvantagesreside'in-thedemovenie'ntbf thevalve handles. p 30 tail construction of thefiinvention, which is de-The body l9 carries a clickM actuated-bye 7 0 signed for "simplicity,economy, and efiicie'ncy. spring fdiqfwhich engages a notch in thebottom These will becomemore apparent from the folof'the interlockingdisc l9 when the secondary lowing description. I handle llisjin affpbsition. Suitable indica- In' the following detailed description of thetionssuch as on oil andtlight are carried invention-reference is had'to'the accompanying Yby 'the interlocking discs and, "\vhen'opposite a"3 3 drawings which form a part hereof. Like *nupointer 42, indicate tothe operator the position merals refer to like parts in all views of theofthe priinaryor'secondary valves.

drawingsand throughout-thedescription. The main valve 'ifsiormedwith a;main valve In'the drawings:'-'- Y passage 28 "extending diametricallythereillustratingit in the completely off position. around the mainvalve ILbtvK ee1'1t'lieopen ex- 'Fig."2 is *a similar plan viewillustratingth'e tremitiesof wepassage "48. This passage pom valve-inthe starting position. trols, the *nainnew to the burner "through a Fig.3 is a similar view illustrating the valve in Y main channel 33 which"terminates in threaded the operating position. I v coupliiigsitlfandfli for-receiving theinain'sup- "'45 Fig. 4 'is-a vertical crosssection through the pIy 'condLIit. Thisby pas's-groove 2 9 is positionedvalveytakenon'th'e line 4 4, Fig. 1. opposite a lateral passage in thehousing '10 Fig. 5 is a horizontalsection, taken on' th'e lirie andcommunicates with the bore of the second- 5 --"5,'Fig. 4. v "ary valveplug "l2. Thes'coridaryvalve plug l2 Figs. 6 and? are detail viewsillustrating the controls two outletsfa lightr outlet *3 I and asecondary v'alv'e plug. I pilotoutlet 32. The lattr'outlets are threadedFigs. 8, 9 and 10 are diagrammatic views "illusto receive the feed'pipesto the lighter and pilot trating the relative positions'of' the ports inthe of the buriier, respectively. a

secondary valve plug when the v'ahfeis in the The secondary plug valvel2 is formed with-an p n's orri .2 andaiespecuvey; Qupp'i diemeeic'anye'xtnam' passage, herein 55 designated the lighter port 38, and with alower diametrically extending passage, herein desighated the pilot port37. These two passages are positioned at an angle of45 to each other.One extremity of the lighter port 36 communicates, by means of adownwardly extending groove 38, with a side groove 39 extending to theextremity of the pilot port 31. The opposite extremity of the pilot port31 is formed with a similar side groove 40 extending oppositelyto theside groove 39. l

Operation Let us assume that the valve is. in the fully ofi position ofFig. l. The secondary valve ports are now in the position indicated inFig.8, so that no gas can flow from the passage 30 to either of theoutlets 3| and 32. It will be' noted that when in this position, themain handle Hi can not be turned since the arcuate portion 20 of itsinterlocking disc I9 is in the depression 2| of the main disc l8. Thisprevents rotation of the main valve. If it is desired to start theburner, the secondary handle is turned 45, or until the click 4| engagesits notch.

The handles are then in the position of Fig. 2 with the light indicationopposite the indicating point 42. When in this position, the ports inthe secondary plug l2 are in the position indicated in Fig. 9, that is,the lighter port 36 is aligned with the lighter outlet 3| and the sidegrooves 39 and 40 of the pilot port 31 are comto the open position ofFig. 3. When in this position, the secondary valve ports are in theposition diagrammatically indicated in Fig. 10. It will be noted thatthe lighter port 36 has moved out of alignment with the lighter outlet3| so that the supply to the lighter is shut ofi. The pilot port hasmoved into direct alignment between the passage 30 and the pilot outlet32 so that gas continues to flow to the lighter. The notch 23 in thedisc [9 has aligned with the arcuate portion 22 of the disc I8 so thatthe latter disc is released and the main handle Hi can be swung tothe onpositionof Fig. 3 to open the main passage 28. The plant is now in fulloperation. 7

It is desired to call attention to the fact that in the full on positionthe secondary disc I9 is locked against the arcuate portion 22 of themain disc l8 so that the secondary handle cannot be moved. Thus, thelighter cannotb'e shut off as long as the main burner supply is on. Theprojecting boss 42 stops the main handle I6 at the fully off positionand the boss 25 stops it at the fully on position by respective contactswith the disc l9. Similarly, the boss 24 and the boss 2'! stop thesecondary handle at the full off and full on positions respectively.

While a specific form of the improvement has been described andillustrated herein, it is desired to be understood that the same maybevaried, within the scope of the appended claims, without departing fromthe spirit of the invention.

Having thus described the invention, what is from said lateral passagecan be turned into one or both said pilot and lighter outlets.

2. A composite valve comprising: a valve body; a main passage extendingtherethrough;

a main valve plug interposed in said main passage; a secondary valveplug positioned in said body parallel to said main valve plug, therebeing a lateral passage in said body between said main and secondaryplugs; a lighter outlet; a

pilot 2 outlet, said outlets extending from said secondary plug; apassage controlled by said secondary plug so that the flow from saidlateral passage can be turned into one or both'said pilot and lighteroutlets; and a groove'formed about said main plug communicating withsaid lateral passage so that said main plug will not control the flow tosaid lateral passage.

.3. A composite valve comprising: a valvebody; a main passage extendingtherethrough; a main valve plug interposed in said main passage; asecondary valve plug positioned in said body parallel to said main valveplug, there being a lateral passage in said body between said main andsecondary plugs; a lighter outlet; a pilot outlet, said outletsextending from said secondary plug; valve ports formed throughsaid'secondary plug opposite said lighter and pilot outlets, saidportsbeing positioned substantially at 45 from each other; and apassagecommunicating between said valve ports so that a, 45 movement of saidsecondary plug will open one or both said pilot and lighter outlets.

- 4. A composite valve comprising: a valve body; a main passageextending therethrough; a main valve plug interposed in said mainpassage; a secondary valve plug positioned in said body parallel to saidmain valve plug, there being a lateral passage in said body between saidmain and secondary plugs; a lighter outlet; a pilot outlet, said outletsextending from said secondary plug; valve ports formed through saidsecondary plug opposite said lighter and pilot outlets, said ports beingpositioned substantially at 45 from each other; there being a grooveformed in said secondary plug between said'valve ports and side groovesextending from one of said valve ports in said plug so that the latterwill remain open during substantially a 45", angle so that a first 45movement of said secondary plug will open both said lighter andpilotoutlets; and a second 45 movement will close said lighter outlet andallow said pilot outlet to remain open.

5. A composite valve comprising: a, valve body; a main passage extendingtherethrough; a main valve plug interposed in said main passage; asecondary valve plug positioned in said body parallel to said main valveplug, there being a lateral passage in said body between said main andsecondary plugs; a lighter outlet; a pilot outlet, said outletsextending from said secondary plug; valve ports formed through saidsecondary plug opposite said lighter and pilot outlets, said ports beingpositioned substantially at 45 from each other;

a passage communicating between said valve ports so that a, 45 movementof said secondary plug will open one or both said pilot and lighteroutlets; and means for indicating to an operator, the termination of a45 movement of said secondary valve plug.

6. A composite valve comprising: a valve body; a main passage extendingtherethrough; a main valve plug interposed in said main passage; asecondary valve plug positioned in said body parallel to said main valveplug, there being a lateral passage in said body between said main andsecondary plugs; a lighter outlet; a pilot outlet,

said outlets extending from said secondary plug; a passage controlled bysaid secondary plug 50 that the flow from said lateral passage can beturned into one or both said pilot and lighter outlets; and'a grooveextending about one side of said main valve plug, said groove being inconstant communication with said lateral passage.

CARL A. PEARSON.

